Clarke, 34, resented his dad Graham after he introduced his mother to the drug and led them both, along with his sister, into a life of ‘drug abuse, criminality and violence.’

He blamed him for the deaths of his sister in 2007, who Clarke believed had been forced into prostitution by his father, and his mother in 2010. Both suffered drug-related deaths.

Forensic officers on Claybank Street, Heywood (Image: Sean Hansford)

After Clarke and his father stopped speaking, there was a reconciliation last Christmas when he was told his dad was terminally ill.

However, despite living together for a brief period, things turned sour with disputes between the pair.

The ‘final straw’ came on Easter Sunday this year. Clarke heard about rumours allegedly spread by his father that he was also a ‘smackhead’ and he accused him of stealing his mobility scooter.

Clarke went to the house where his dad was living, with his uncle, on Claybank Street in Heywood , and after climbing up scaffolding and through an upstairs window, launched a ‘frenzied’ fatal attack on him.

He stabbed the 52-year-old 18 times with a knife, and when the handle snapped, starting punching him.

Scene of the stabbing (Image: Sean Hansford)

He only left when he believed he was dead or dying, and after he had punched his uncle’s partner, who was also in the house, in the face, leaving her needing stitches.

He spent the night drinking and smoking cannabis before handing himself to police the day afterwards on April 6.

Clarke denied murder and was cleared of the charge after a trial, but was convicted of manslaughter by a jury after they heard he was suffering from a mental disorder triggered by the death of his mother.